oracle ALTER TABLE 语法 - 缺少 DIRECTORY 关键字
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ALTER TABLE syntax - missing DIRECTORY keyword
提问by Sarahfromnowhere
I am trying to alter a table in Oracle database by adding two new columns to it with SQL query as below:
我试图通过使用 SQL 查询向其中添加两个新列来更改 Oracle 数据库中的表，如下所示：
ALTER TABLE Members
ADD annual_dues NUMBER(5,2) not null DEFAULT '52.50',
ADD payment_date DATE;
On executing it, I am getting an error as below:
在执行它时，我收到如下错误：
SQL Error: ORA-30649: missing DIRECTORY keyword
SQL 错误：ORA-30649：缺少 DIRECTORY 关键字
I have played around it but it didn't help. What is wrong in the SQL query?
我玩过它，但它没有帮助。SQL 查询有什么问题？
回答by ypercube??
I think you need to put NOT NULLafter the DEFAULT 52.50:
我认为你需要把NOT NULL后DEFAULT 52.50：
ALTER TABLE Members
ADD ( annual_dues NUMBER(5,2) DEFAULT 52.50 NOT NULL
, payment_date DATE );
